Linux Startup Process

1. Load BIOS (hardware information)

2. Read MBR's config to find out the OS

3. Load the kernel of the OS

4. INIT process starts ..

5. Execute/etc/rc. d/sysinit (RC: Run Command, D: indicates the genie thread, indicating the server process not visible during startup)

6. Start other modules (ETC/modules. conf) // load various modules, memory management modules, file management modules, etc.

7. Execute the run level scripts //

8. Execute/etc/rc. d/rc. Local

9. Execute/bin/login

10. Shell started

 

Init (run level-/etc/inittab)

0-system shutdown status

1-single user working status

2-multi-user status (no NFS)

3-multi-user status (with NFS)

4-The system is not used and left to the user

5-graphic interface

6-The system is shut down normally and restarted